Here is the full list of all 40 Redeemer: Enhanced Edition achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Forward, Forward, High Punch. Chapter 12
Be quicker than the big guys in Chapter 9
Perform 100 stealth kills.
Clean out the greenhouse in Chapter 8
Complete the game on hardcore mode
Be careful with the glass in Chapter 10
Mince some meat in Chapter 11
This is a zero-waste production facility. Chapter 13
Complete every chapter with 0 deaths.
Destroy more than 50% of the walls in Chapter 14
Kill 150 enemies using the environment
Let the others do your work in Chapter 7
Add a bit of pacifism to this bloodbath. Chapter 6
Execute 300 enemies.
Shut down the engines in Chapter 15
Perform 300 parries.
Break 100 weapons
Beat all Arena levels.
Cook some kebabs in Chapter 5
Perform 40 stealth kills.
Who's there? Chapter 3
Do it the oldschool way in Chapter 2
Kill 75 enemies using the environment
Complete the game
End the rivalry once and for all
Shoot 500 enemies.
Restore 1000% of health
Defeat the guardians.
Kill 3 enemies while Vasily is near death
Parry 50 times
Kill three enemies simultaneously
Kill five enemies simultaneously
Shoot 50 enemies
Win the duel against an old firend.
Kill 25 enemies using the environment
Restore health from near death to full
Turn the ruins into a crypt in Chapter 4
Execute 30 enemies.
Kill two enemies simultaneously
Feed the fish in Chapter 1